<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册系统</title>
</head>
<body>
     <form action="/abc" method="post">
         输入用户:<input type="text" name="username">
         <br/>
         输入密码: <input type="password" name="password">
         <br/>
         爱好:<input type="checkbox" name="hobby" value="爬山">爬山
             <input type="checkbox" name="hobby" value="游泳">游泳
             <input type="checkbox" name="hobby" value="打篮球">打篮球
         <input type="checkbox" name="hobby" value="踢足球">踢足球
         <input type="checkbox" name="hobby" value="打崇宁">打崇宁
         <br/>
         <input type="submit">注册
     </form>
</body>
</html>